The University Intitute of Chemical Process Engineering and the Chemical Engineering Department have both extensive experience in the determination of the toxicity of wastes, considering several tests presented in the following sections. The results obtained are discussed in accordance with different legislations: regions, state, European Union and USA.
The determination of the toxic by-products that can be evolved in the combustion of wastes is also interesting on considering alternatives for the treatment of wastes: thermal treatment or disposal in controlled landfills under special conditions.
The procedure proposed can be applied to many wastes: solid, semi-solid and liquids.
The Institute of Chemical Process Engineering of the University of Alicante is involved in carrying out these kinds of analysis and training activities.
Dioxin is one of the most toxic chemicals known. Dioxins are non-biodegradable chemicals. Due to this, dioxins are accumulated in the tissues of the living creatures, mainly in the fatty materials.
The research Group of "Waste, energy, environment and nanotechnology (REMAN)" of the University Intitute of Chemical Process Engineering, has the know-how to carry out the dioxin and furan posseeixen la tecnología necessària extraction, cleanup and analysis for more than 130 different compounds in several matrices and very low concentracions (picogramos or even picograms or femtograms).
Nowadays, this methodology (standard one) is the only one available method to carry out reliable dioxin analyses
The research group "Waste, Energy, Environment and Nanotechnology (REMAN)" of the University of Alicante has developed a procedure for the elimination of odours in recycled plastics by steam stripping.
This procedure comprises the following stages: (i) separation and conditioning of plastic; (ii) shredding of plastic; (iii) chemical washing with surfactant; (iv) rinsing of plastic material; (v) mechanical drying; and, (vi) deodorization of plastic. This last stage is done in a steam distillation column and is where the volatile organic compounds (VOCs) are extracted from the clean, dry material by steam distillation, and where the VOC-free plastic exits at the bottom of that column.
In this way, it is possible to improve the quality of recycled plastics and increase the reuse of plastics from both domestic and industrial waste as raw material for products for later use.mpreses interessats en l'explotació comercial d'aquesta tecnologia mitjançant acords de llicència i/o cooperació tècnica.
The research group of the University of Alicante "Phase equilibrium" has developed an equipment for the determination of isobaric equilibrium in mixtures of phases when solids are present..
The equipment includes a boiler coupled with an ultrasonic probe that facilitates the reduction of the particle size of the solid, a separation chamber attached to the boiler that is connected to a condenser to carry out steam condensation and stable recirculation, and a mixing flask. In addition, with respect to the starting equipment, the diameter of the pipe joining the boiler and the mixing flask has been increased until it is sufficient to allow the circulation of solids without obstructions. Moreover, a recirculation device consisting of a recirculation channel with a controlled external electrical resistance has been incorporated to keep the mixture at bubble temperature. Valves for cleaning and sampling have also been installed on the equipment.
All these innovations have allowed the research group to obtain accurate and thermodynamically consistent data of isobaric equilibrium vapour-liquid-solid (V-L-S) and vapour-liquid-liquid-solid (V-L-L-S)
The group has a prototype developed on a pilot scale. Companies interested in acquiring this technology for commercial exploitation are sought.
Briquettes of different densities and mechanical resistance can be obtained from almond shells without the addition of other substances. At 180 ºC with pressure of 640 kg/cm2, cylindrical briquettes, without grounding of the almond shells, have been obtained with very good mechanical resistance, whereas at 70-80 ºC with 640 kg/cm2 , briquettes with acceptable mechanical resistance are also obtained.
Rotational moulding is a technique for the transformation of plastics in hollow articles such as doll’s heads, tanks, containers, gloves, etc. The technique allows to obtain small parts of a few grams as well as containers of more than 20000 liters of capacity. Foamed parts, multi-layer mouldings or soft mouldings without joining lines can also be produced, what gives an idea of the versatility of this technique. Inversions and costs of production are very low when compare with other plastics processing techniques as injection moulding or blow moulding.
The group of plastics of the Institute of Chemical Process Engineering of the Alicante University is working on rotational molding of plastics since 1990. From this year to the present a great number of research projects for the industry have been developed. The group has a high experience, expertise and know-how in cycle reduction, authomatization, wastage reduction, formulation optimization, pigmentation, double skin products, soft foamed materials and production of parts with special features as wood-like or skin-like appearance.
Our research group has developed a new photopolymer which may be used as a holographic recording material. It is easy to prepare in layers of the desired thickness and has a lower potential toxicity than conventional materials. It is characterized by being environmentally friendly, since it does not contain any petroleum-derived solvents or other components classified as toxic, biotoxic, explosive, radioactive, oxidising, corrosive, inflammable or environmentally hazardous, and no such substances are used to prepare it.
The only solvent used is water, thus minimizing any risk of contamination and, at the end of its useful life, it is easy to recycle in aqueous phase. It is possible to automatize all the stages of its preparation, and it enables holograms to be obtained in a single stage without the need for subsequent processing.
We are looking for companies interested in acquiring this technology for its commercial exploitation.
The most common methodology in the determination of the isobaric vapour-liquid- equilibrium (VLE) data is by means of some apparatus that utilise the dynamic method. However, these equipment are useful JUST when the liquid is composed by a sole phase, that is homogeneous systems.
In case of two liquid phases (heterogeneous systems), this equipment can not be used these since is not possible to reach a stationary regime. Limited mass transfer speed between the liquid phases as well as changes in the two liquid phases circulation produces important data fluctuation. In consequence, measures can not be carried out.
The technology developed by the Department of Engineering Chemistry of the University of Alicante transforms this equipment to be able to obtain equilibrium data on two phase liquid systems (heterogeneous systems). By so, the technology transforms equipment for the determination of vapour-liquid- equilibrium (VLE) data into equipment for the determination of vapour-liquid-liquid equilibrium (VLLE) data.
The research group Polymer processing and pyrolysis of the University of Alicante has developed a novel photobioreactor in order to grow massively different species of microalgae, even on industrial scale and with automation.
The main advantages of this technology are: high productivity, better CO2 consumption, better light transfer to the culture, more effective shaking and less cleaning and maintenance time. A més, permet l'escalat industrial i l'automatització.
The research group is looking for companies acquiring this technology for licensing agreement and technical cooperation.
The Waste, Pyrolysis and Combustion Group from the University of Alicante has developed a process for the possible elimination of printed ink from plastic films used in flexible packaging. Using this process, we can obtain an ink-free plastic film which can be easily reconverted to plastic pellets. At present there are no industrial methods for eliminating printed ink from these waste materials, and they can only be recycled with a very meagre increase in value
The process developed is completely novel and respects the environment, because it doesn't use any kind of organic solvent. The most important advantages of ink elimination are, firstly, the increase in value of the treated plastic, even equalling the quality of new pellets, and secondly the sale price of recycled plastic compared with new plastic.
The technology has been tested successfully in different printing materials, such as polythene, polypropylene, polyester and polyamide. The process is viable for both solvent and water based inks. We are looking for recycling companies that may be interested in applying this process for treating and improving printed plastic.
The group has developed an innovative continuous and automatical process for manufacturing, dosing and packaging 'Jijona Turron' . The pre-industrial model developed can produce approximately 200 kg/h, and consists of a twin screw extruder which produces the raw materials mixture required for the production of nougat, increasing considerably the production (The process takes several minutes and is automatic so no labor is required), improving the hygienic quality of the product and giving greater uniformity to the nougat obtained
The University of Alicante jointly with the Queen's University at Belfast has developed a process to pigment coating plastic articles by mean of spring polymer and pigment powder. The process is tested at laboratory scale and is based on the melting "in situ" of polymer powder in combination with the pigment onto the surface of the part already formed. The technology overcomes traditional problems when coating plastic articles and is very appropriated to polyethylene painting. Partners for acquiring the patent rights are sought.
The research group "Procesado y Pirólisis de Polímeros" of the Chemical Engineering department in the University of Alicante has developed a novel process to recycle different types of plastic (EVA, polyethylene, polypropylene, polyurethane, foams, rubber or any kind of combination of them). The method can convert these materials into products for different sectors and applications, in an easy and economical way.
The researchers are seeking companies interested in licensing this technology and put it in the market.
In Gas-Assisted Injection Moulding (GAIM), gas is injected into a mould that has been partially filled with polymer. The gas drives the molten polymer core further into the mould, until it is filled completely. The penetrating gas leaves behind a polymer layer at the mould walls, yielding a product with a polymer skin and an inner gas channel
GAIM offers a number of advantages over conventional injection moulding. They mainly originate from the negligible pressure drop in the gas core: reduced clamp force, reduced sink marks, reduced residual stresses and shorter cycle times. The Institute of Chemical Process Engineering of the University of Alicante has applied successfully a complete CAE software package in order to give mould design guidelines and select the optimum process conditions.
We are seeking companies to provide us our high experience, expertise and know-how to produce parts that demands the best quality.
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